Dell PowerEdge R900 Hardware Owner's Manual (PDF) - Page 181

A program that allows graphics-mode application programs

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by changing settings in the configuration software for the devices. UNI X - An operating system written in the C programming language. A precursor to Linux. U P L I N K P O RT - A port on a network hub or switch used to connect to other hubs or switches without requiring a crossover cable. UPS - Uninterruptible power supply. A battery-powered unit that automatically supplies power to your system in the event of an electrical failure. USB - Universal Serial Bus. A USB connector provides a single connection point for multiple USB-compliant devices, such as mice and keyboards. USB devices can be connected and disconnected while the system is running. U T I L I T Y - A program used to manage system resources-memory, disk drives, or printers, for example. UTP - Unshielded twisted pair. A type of wiring used to connect systems in a business or home to a telephone line. V - Volt(s). VA C - Volt(s) alternating current. VDC - Volt(s) direct current. VGA - Video graphics array. VGA and SVGA are video standards for video adapters with greater resolution and color display capabilities than previous standards. V I D E O A D A P TE R - The logical circuitry that provides (in combination with the monitor) your system's video capabilities. A video adapter may be integrated into the system board or may be an expansion card that plugs into an expansion slot. VI DE O D R I V E R - A program that allows graphics-mode application programs and operating systems to display at a chosen resolution with the desired number of colors. Video drivers may need to match the video adapter installed in the system. V I D E O M E M O R Y - Most VGA and SVGA video adapters include memory chips in addition to your system's RAM. The amount of video memory installed primarily influences the number of colors that a program can display (with the appropriate video drivers and monitor capabilities). V I D E O R E SO L U T I O N - Video resolution (800 x 600, for example) is expressed as the number of pixels across by the number of pixels up and down. To display a program at a specific graphics resolution, you must install the appropriate video drivers and your monitor must support the resolution. Glossary 181

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Glossary
181
by changing settings in the configuration software for the devices.
UNIX —
An operating system written in the C programming language. A precursor to
Linux.
UPLINK
PORT
—
A port on a network hub or switch used to connect to other hubs or
switches without requiring a crossover cable.
UPS —
Uninterruptible power supply. A battery-powered unit that automatically
supplies power to your system in the event of an electrical failure.
USB —
Universal Serial Bus. A USB connector provides a single connection point for
multiple USB-compliant devices, such as mice and keyboards. USB devices can be
connected and disconnected while the system is running.
UTILITY
—
A program used to manage system resources—memory, disk drives, or
printers, for example.
UTP —
Unshielded twisted pair. A type of wiring used to connect systems in a
business or home to a telephone line.
V—
Volt(s).
VAC —
Volt(s) alternating current.
VDC —
Volt(s) direct current.
VGA —
Video graphics array. VGA and SVGA are video standards for video adapters
with greater resolution and color display capabilities than previous standards.
VIDEO
ADAPTER
—
The logical circuitry that provides (in combination with the
monitor) your system’s video capabilities. A video adapter may be integrated into the
system board or may be an expansion card that plugs into an expansion slot.
VIDEO
DRIVER
—
A program that allows graphics-mode application programs and
operating systems to display at a chosen resolution with the desired number of colors.
Video drivers may need to match the video adapter installed in the system.
VIDEO
MEMORY
—
Most VGA and SVGA video adapters include memory chips in
addition to your system’s RAM. The amount of video memory installed primarily
influences the number of colors that a program can display (with the appropriate video
drivers and monitor capabilities).
VIDEO
RESOLUTION
—
Video resolution (800 x 600, for example) is expressed as the
number of pixels across by the number of pixels up and down. To display a program at
a specific graphics resolution, you must install the appropriate video drivers and your
monitor must support the resolution.